package com.company;

public class Main {

    public static void main(String[] args) {
	// write your code here
        System.out.println(10+20+30+"");
        System.out.println(10+20+""+30);
        System.out.println(""+10+20+30);

        int num = 1;
        int flag = num>0?1:-1;
        System.out.println(flag);
        //两数找最大
        int a = 8, b = 55;
        int max = a>b?a:b;
        System.out.println(max);
    }
}
